72009694 has 8 divisors (see below), whose sum is σ = 110649168. Its totient is φ = 35126640.

The previous prime is 72009689. The next prime is 72009701. The reversal of 72009694 is 49690027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439002 + ... + 439165.

It is an arithmetic number, because the mean of its divisors is an integer number (13831146).

Almost surely, 2^72009694 is an apocalyptic number.

72009694 is a deficient number, since it is larger than the sum of its proper divisors (38639474).

72009694 is a wasteful number, since it uses less digits than its factorization.

72009694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878210.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 72009694 is about 8485.8525794407. The cubic root of 72009694 is about 416.0354344508.

The spelling of 72009694 in words is "seventy-two million, nine thousand, six hundred ninety-four".